Dispensing cap



Feb. s, 1938.

E. L. CHOTT DISPENSING CAP Filed May e, 193e Patented Feb. 8, 1938 UNITED STATES PATENT OFFICE DI SPEN SIN G CAP Application May 6, 1936, Serial No. 78,077

6 Claims.

This invention relates to devices for measuring tooth llingmaterial and has for its main object to provide a new and improved device of this character.

Another object of the invention is to provide a simple, practical and efficient device of the character described.

Another object is to provide a device for dispensing uniform quantities of tooth filling materialsuch as powdered metal.

The invention consists in a novel construction of the device and in the parts and combinations as hereinafter described and pointed out, particularly in the appended claims.

l5 Referring more particularly to the accompanying drawing forming a part of this specification and illustrating a practical adaptation of the invention;

Fig. 1 is a side View of the device;

Fig. 2 is asimilar view at right angles to the position of Fig. 1;

Fig. 3 is a top view of the device of Fig. 1;

Fig. 4 is an inverted cross-section taken along the line 4-4 of Fig. 3, enlarged and showing a portion only of the container;

Fig. 5 is a cross-section taken along the line 5 5 of Fig. 4;

Fig. 6 is a detail view of the measuring cylinder partly in central section; and

3o Fig. 7 is a detail view of one of the friction cap pins.

Referring more particularly to the drawing, I show a dispenser having a container portion I0 provided with a threaded neck and a dispens- ;5 ing cap I2 preferably of cylindrical shape, having an internally threaded portion I3 for cooperation with threaded neck of container I0. The cap I2 has a cross bore I4, the ends of which are provided With circular grooves I5. A receiving port 0 I6 extends from the inner portion of the cap to the cross bore I4 and a similar port I1 is provided. A discharge port I8 is arranged in alignment with receiving port I6 and extends from cross bore I4. A similar discharge port I9 is 3 provided, aligned with receiving port I1. A slot 28 extends across discharge ports I8 and I 9 and is adapted to provide a friction bearing for a rotary measuring cylinder 2|. Cylinder 2| has a cylindrical or ring shoulder 22 adapted to rotate in one of the circular grooves I5 and is further provided with a knurled operating stem 23 at one end. The opposite end of the cylinder 2| has a bore 24 having threads 24a in which ts a lock screw 25 which retains a washer 26 which seats in the adjacent groove 5. A cylindrical pocket 21 is provided in cylinder 2| and aligned with receiving port I6 and discharge port I8, and a similar pocket 28 is formed in alignment with ports |1 and I9. Pocket 28 is formed in cylinder 2| on the opposite side of pocket 21 such that 5 when pocket 21 opens to receiving port I 6, pocket 28 will open to discharge port I9 and vice versa, and when by rotation of the cylinder 2| pocket 21 opens to discharge port I8, pocket 28 will be opposite receiving port I1. At the bottom of 10 each pocket 21 and 28 is a threaded recess 29 adapted to receivean adjustable headless screw 38, adjustment of which will increase or decrease the size of the pockets 21 and 28 by which the site recesses 3| are provided in cylinder 2|, and a threaded bore 32 and a concentric cylindrical bore 33 are provided in the cap |2in alignment with the center line of recesses 3|. A hollow 20 screw 34 is adapted to fit in threaded bore 32 and retains a plunger latch 35 which extends partially into bore 33 and is pressed by spring 36 against the side of cylinder 2| and engages recesses 3| as the cylinder 2| is rotated. 25

In bore 24 between adjusting screws 38 is a compression spring 31, at each end of which is a friction cap pin 38. Pins 38 are maintained by spring 31 against the sides of screws 30, the friction contact of which prevents screws 38 from turning accidentally and changing the desired volume of measuring pockets 21 and 28.

The operation of the device should be obvious. When cylinder 2| is rotated by means of the operating stem 23 the pockets 21 and 28 will 5 alternately be brought into alignment with receiving ports I6 and I1 receiving a denite quantity of the tooth filling material from the container I8 and when the cylinder is rotated 180, as will be indicated by the plunger latch 35 being snapped into one of the recesses 3|, the material will be dispensed through discharge ports I8 and able in one or the other of the pockets 21 and 45 in readiness for immediate discharge as needed. While I have illustrated and described the preferred form of construction for carrying my inthe invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A device of the character described c-omprising a container and a closure therefor, said closure having axially alined filling and discharge ports, a rotatable dispensing cylinder between said ports and having a plurality of measuring recesses alined with said ports, and a resilient friction bearing for said cylinder, there being a slot in said closure adapted to provide said friction bearing.

2. A device of the character described comprising a container and a closure therefor, said clcsure having a plurality of pairs of axially alined filling and discharge ports, and a dispensing cylinder between said ports, said cylinder having an adjustable measuring recess in alinement with each of said pairs of ports.

3. A device of the character described comprising a container and a closure therefor, saidclosure having a plurality of pairs of axially alined iilling and discharge ports and a cylindrical bore, and a dispensing cylinder between said ports, said cylinder having an adjustable measuring recess for each of said pairs of ports, said recesses each having an adjustable measuring screw therein, one of said recesses adapted to register with its filling port when the other is in register with its discharge port and vice versa.

4. A device of the character described comprising a container and a closure therefor, said closure having axially alined filling and `discharge ports and a cylindrical bore, a dispensing cylinder between said ports, said cylinder having adjustable measuring recesses, said recesses each having an adjustable measuring screw therein, a bore in Asaid cylinder between said measuring recesses, and friction means in said bore, adapted to engage said screws.

5. A device of the character described comprising a container and a closure therefor, said closure having axially alined filling and discharge ports, a dispensing cylinder between said ports, said cylinder having adjustable measuring recesses, each being alined with a pair of said ports, said recesses each having an adjustable measuring screw therein, a bore in said cylinder between said measuring recesses, and friction means in said bore adapted to engage said screws, said means comprising a spring.

6.V A device of the character described comprising a container and a closure therefor, said closure having axially alined filling and discharge ports, a dispensing cylinder between said ports, said cylinder having adjustable measuring recesses each being alined with a pair of said ports, said recesses each having an adjustable measuring screw therein, a bore in said cylinder between said measuring recesses, and friction means in said bore to restrict the movement of said screws, said means comprising a spring, said spring having friction cap pins adapted to engage said measuring screws.

Y EDWARD L. CHOTT. 

